Adam -- a primal Old Testament name -- was revived as a 1960s cowboy name. Adam is not as popular as it once was and feels ready for a respite, replaced by newer A names like Aidan/Aiden, Avery and Axel. Its most prominent current bearers include Adams Sandler, Levine, Brody and Driver -- who plays a character named Adam on Girls.
 Adam, of course, is the first man God created. It is also a generic term for mankind. Adam did not hit the U.S. Top 100 until 1970, peaking in the early '80s at Number 18.

Adam

Gentle but grandiose and beloved by British novelists including Evelyn Waugh and P. G. Wodehouse, Ambrose was a fast rising name in 2022. Entering the UK Top 1000 for the first time and proving popular among Nameberry users, its elegance, softness, and vintage style means it fits in with popular Theodore, Sebastian, and Jeremiah. 
 With an air of blooming well-being, Ambrose feels a bit upper-class, a little posh, but not too stuffy. It comes from the same Greek root as 'ambrosia', the food of the gods, said to confer immortality.
 Ambrose was the name of one of the important doctors of the early Christian church, the fourth century St. Ambrose. It also belonged to one of the four great Latin teachers of Christianity, who also developed the use of music in church services. TV fanatics might be interested to know that in 1961, Ambrose was designated the patron saint of educational television by Pope John XXII.
 One thing that might given some parents pause is the problem of finding a nickname for the stately Ambrose. Ami? Bro? Amby? They might work for some, but other options include the stylish Bo, the literary Bram, the sweet Ro, or even the unexpected and unisex Rose.

Ambrose

Quirky cool Arlo is now well and truly back. Last year it broke into the US Top 200 boy names and consistently ranks among the most popular boy names on Nameberry. 
 Arlo is even more popular in the UK, Australia and New Zealand. Arlo is also one of the top baby names among Nameberry's visitors from leading US cities.

 
Once strongly associated with shaggy singer Arlo Guthrie, Arlo has an animated and cheery feel, thanks to its upbeat o ending. It was chosen by Toni Colette for her son in 2011, which brought the name back into the spotlight. Previously, Arlo was in regular use in the first half of the twentieth century—it was Number 667 in 1915, for example, but it had dropped off the charts in 1944.
 Arlo has many possible derivations along with its Irish and English roots. It may be a shortened form of the Italian name Carlo or the Spanish Carlos, and in Basque-speaking regions it is the word for area. In English, Arlo was used as a place name, Arlo Hill, by Edmund Spenser in his epic poem The Faerie Queene and is thought to derive from the Celtic word Aherlow, meaning "between two highlands."

 A growing number of girls are also named Arlo in the US each year, with a handful more babies of both sexes receiving the Arlow and Arlowe spellings, which take this name more into smart surname territory.

Arlo

Cato conjures up images of ancient Roman statesmen and southern antebellum retainers; it could have revival potential, with its 'O' ending and the current interest in the names of Greek and Roman antiquity.
 The Roman statesman known as Cato the Elder was born Marcus Portius, the Cato added in tribute to his natural sagacity, practical wisdom and political expertise.
 Cato appears in Shakespeare's Julius Caesar and, to go from the sublime to the ridiculous, in the Pink Panther movies--and Kato was The Green Hornet's valet. Cato is also a 21st century Hunger Games name, which could do more to spur its popularity than all its past history.

Cato

Fewer letters does not always mean easier—the traditional spelling is the one most people will recognize.

Emanuel

Thanks to the inspiration of Pope Francis, Francesco has galloped to the front of the line to become the Number One boys' name in Italy.  As Francesca has become a familiar and popular form of the name for girls in the wider world, so does the handsome Francesco have that potential for boys.

Francesco

A classic Italian name still heard in the Italian-American community. Once tainted by the association with the Spanish dictator, it's now more likely to call up actor James Franco. 
 The bright o ending and the popularity of Pope Francis could increase the appeal of this name.

Franco

King David's father turned 1980s cowboy, Jesse is now down in popularity. The name is associated with a wide variety of bearers, from outlaw Jesse James to Olympic athlete Jesse Owens to activist Jesse Jackson to current actors Jesse Tyler Ferguson and Jesse Eisenberg. The spelling Jesse is more usual as a <a href="https://nameberry.com/boys-names">boys' name</a> while Jessie is more traditional for girls.

Jesse

Leo is a strong-yet-friendly name that was common among the Romans, used for thirteen popes, and is now at its highest point ever in the US thanks in part to Leonardo "Leo" DiCaprio.

Derived from the Latin meaning "lion", Leo is one of those names, like Luke and Finn, that many people assume must be short for something but that is authentically a complete name in its own right. That said, Leo can but short for any number of names, from Leonardo in Latinate languages to Leon and Leopold in Germanic languages. We've even heard of little girl Leonoras and Leonies called Leo: How cute is that?

Leo's simplicity makes it an international star, ranking in the Top 100 in countries as diverse as Ireland and Israel, Spain and Sweden, Austria and Australia. Leo is a truly diverse name, a perfect choice for any family crossing countries or blending cultures.
 
Leo's only real downside is its universal popularity and familiarity. If you call your child Leo, you and they will almost certainly encounter many other Leos over the years of all types and ages. Plus or minus? Or both?
 
Penelope Cruz and Javier Bardem called their son Leo, as did actress Kim Raver, NASCAR driver Jeff Gordon and Kristin Olson. 
 Famous Leos of the past include Pope Leo the Great, a number of early saints, and Leo Tolstoy, as well as Dead End Kid Gorcey, colorful baseball manager Durocher, influential gallerist Castelli and the leonine MGM icon. There have been Leos seen on everything from The West Wing to Charmed to Grey's Anatomy to Seinfeld's Uncle Leo.

Luis has long been one of the most popular Hispanic names in America — it was in the Top 100 every year from 1980 to 2014, though it's dropped a bit in popularity. It's familiar, yet would add a worldly touch to a basic surname. 
 Luis has many notable namesakes, from film director Luis Bunuel to baseball Hall of Famer Luis Aparicio.

Luis

Simple and universal, Marco is a Latin classic that would make a much livelier namesake for an Uncle Mark. It was used for her son by actress Jill Hennessy and goes well with surnames of any nationality.
 Marco, related to the Roman god Mars, has long been associated with Marco Polo, the thirteenth century Venetian merchant-traveler who was instrumental in introducing Europeans to Asian culture. Eugene O'Neill wrote a play called Marco Millions, based on the life of Marco Polo.
 More recent noteworthy Marcos are Marco Andretti, Indy race car driver grandson of the legendary Mario, and Marco Rubio, Florida senator. The name can also be found in two early Dr. Seuss books.

Marco

Though ancient, Marcus now sounds more current than Mark, in tune with today's trend towards us-ending Latinate names.
 Marcus, which is thought to be related to Mars, the god of war, was commonplace in classical Rome--not surprising as it was one of only about a dozen given names in use then. Among the most prominent were the emperor and stoic philosopher Marcus Aurelius, the Marcus known to us as Mark Antony, and the politician, philosopher and orator Cicero.
 Dr Marcus Welby was a staple on vintage TV, and since then we have seen the name in both the Harry Potter and Twilight franchises, as the protagonist of Nick Hornby's About a Boy, on Sons of Anarchy and Men of a Certain Age, and in Indiana Jones, The Blind Side, and Bad Santa.
 Marcus Loew was the movie magnate behind MGM and Loew's theatres, and Marcus Allen was an Oakland Raiders superstar.
 Marius is a related possibility.

Marcus

Mateo vaulted into the boys' Top 10 in 2023, ranking all the way up at Number 6. Counting Mateo and Teo along with Anglo equivalents Theodore and Theo make this by far the Number 1 boys' name in the US.
 
Mateo is one of the Latinate names that, like Mia and Luca, is becoming popular far beyond its native Spanish community.
 
The Spanish form of Matthew, which derived from the Hebrew name Mattiyahu, Mateo can also be spelled Matteo, technically the Italian variation. Mattiyahu consists of the elements mattan, meaning "gift" and yah, which references the Hebrew God. 
 
Mateo is enormously popular in Spain and Latin America, but it's also a top boys' name in the US along with several other countries in central and eastern Europe. Its approachable spelling and pronunciation for non-Spanish speakers is one reason it's found such widespread favor. Plus it's a fresh spin on dad name Matthew and a shortcut to the stylish short form Teo.

Actor Colin Firth has a son called Matteo, the Italian form; the Benjamin Bratts have a Mateo. 

Matheo is an archaic Spanish spelling, although it is used in France as Mathéo.

Mateo

This attractively energetic Italian version of the classic Matthew is primed to move further and further into mainstream American nomenclature. Mateo is technically the Spanish version, but many parents in the US use the two spellings interchangeably. 
 
In the US, about 12,000 baby boys were named Mateo, Matteo, or Teo in 2021, vaulting the name in all versions into the Top 10. Mateo alone, by far the most popular version, lies just outside the Top 10.
 Actor Colin Firth has a son called Matteo, as does Ricky Martin; the Benjamin Bratts and Tom Colicchios have boys named Mateo. We're sure that both these spellings will keep climbing in tandem, sharing the possibility of the lively nickname Teo.

Matteo

Nico is one of the great nickname names, full of charm, energy and effortless cool -- a neo Nick.
 Nico is commonly heard in Italy -- as a short form of Niccolo -- and also in France, Belgium, Germany, Holland and Spanish-speaking countries.
 As a unisex nickname name, Nico is associated with the German-born single-named Velvet Underground singer (nee Christa) promoted by Andy Warhol. And Nico Reilly was one of the female leads on the TV series Lipstick Jungle. But over 90% of the American babies named Nico are boys.

Nico

Nicolas is the French and Spanish form, or streamlined spelling, of Nicholas, popularized by actor Nicolas Cage. Nicolas has been consistently on the charts since Social Security began releasing data, but the name did not truly take off until around the 70s. Today Nicolas is popular among Spanish and Portuguese-speaking parents, ranking in the Top 30 in Spain, Brazil, and Chile.

Nicolas

Madonna did much to polish up the image of this old-neighborhood Italian choice when she picked it for her son with British director Guy Ritchie, and several years later it was also used by Rose Byrne and Bobby Canavale for their son. It now feels much more mainstream than many <a href="https://nameberry.com/fameberry">celebrity baby names</a>, sharing the quirky appeal of some other so-far-out-they're-in <a href="https://nameberry.com">baby names</a> as Bruno and Hugo. 
 Legendary boxers Rocky Graziano and Rocky Marciano were both born Rocco. Rocco DiSpirito is an award-winning celebrity chef. Rocco Landesman, meanwhile, is a noted Broadway producer.

Rocco

Best known as a feminine diminutive, Romy is used now for boys too; has a lot of energy and bounce. Can be a short form of Roman or Romeo or a name in its own right.  Remy is another related choice, or you might want to go all the way to Romulus.

Romy

See the popularity graph below for the name Theo? It's been heading straight uphill since 2010, when it hopped back onto the Top 1000 after a 60+ year absence.
 
Now in the Top 100 in this form, Theo's popularity is even wider given its common use as a nickname for Theodore, which made the Top 10 for the first time in 2022. This might be the generation of Theos.
 
Theo's newfound popularity extends far beyond the US and the rest of the English-speaking world. It's currently a Top 100 name in Germany, Brazil, Scandinavia, and beyond, as well as being a popular choice for pets.
 Theo first made an impact as the name of the only son on "The Cosby Show," earlier it was associated with Vincent van Gogh's supportive brother Theo.

Theo

The pronunciation may be slightly different—toe-MAHS—though some parents use this as a phonetic spelling of Thomas.

Tomas

The o ending and the positive meaning in many languages makes this a winner, and with the feminine Vera making a surprise return, and the new love for the letter 'V', this becomes a name that has definite possibilities. 
 A geographical tie is to Vero Beach in Florida, former home of the Dodgers training camp.

Vero

ChristinaMotta's list "Italian and Portuguese Boy Names" of 21 great name ideas: Adam - Vero!

Italian and Portuguese Boy Names

I always found it hard to find names from different regions than your own so I looked up names that are beautiful and part of my partner's and my heritage. Christina Angela-Maria